#include <iostream>
#include <string>
using namespace std;
 
int main() {
 
	string s;
	cin >> s;
 
	for(int i = 0;i< s.size();i++){
		if((s[i]>='a' && s[i]<='z') || (s[i]>='A' && s[i]<='Z') || s[i]=='-'){
			cout << s[i];
		}else{
			// do nothing;
		}
	}
	return 0;
}

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